نتایج جستجو برای: photoelectric device
تعداد نتایج: 684988 فیلتر نتایج به سال:
With the miniaturization of crystals-based photoelectric devices, electrode contact-geometries may play a critical role in determining device performance. However, investigation contact geometries situ faces great challenges due to geometry is typically unmodifiable. To this end, kind liquid metal employed as an adaptive-deformable study carrier transport through perovskite microcrystals, which...
Introduction: We have investigated cardiac SPECT with slant hole collimator in which the holes are slanted towards the target organ, to provide greater sensitivity over the parallel hole collimator. In addition, parallel hole collimator was used to obtain a comparison in FWHM, sensitivity, Compton and photoelectric area values in the simulations. Materials and Methods...
RESUMEN Mediante fotometría de 75 estrellas en la dirección de NGC 7063 se ha deter-minado la membresia de algunas estrellas, establecido su distancia (722 ± 105 pc), su edad (log age de 8.146) y su enrojecimiento (E(b − y) = 0.091 ± 0.039 mag). ABSTRACT From uvby photometry of 75 stars in the direction of NGC 7063 we were able to determine membership of some stars and fix the distance (722 ± 1...
Photoelectric charging measurements are presented of dust grains in vacuum for isolated grains and for grains near a photoemissive surface. Isolated grains reach a positive-equilibrium floating potential, dependent upon the work function of the particle, which causes the emitted electrons to be returned. Grains dropped past a photoemitting surface reach a negative floating potential for which t...
The aim of this study was to examine the interrater reliability (trained vs. untrained raters) and criterion-related validity (manual vs. automatic timing) of the 4 × 10-m shuttle run and 30-m running speed tests (times measured). The study comprised 85 adolescents (38 girls) aged 13.0-16.9 years from the Healthy Lifestyle in Europe by Nutrition in Adolescence study. The time required to comple...
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